ON THE SIGNIFICANCE OF THE MAIN RESISTANCE COMPONENTS OF ICEBREAKERS

The operational performance of icebreakers is dependent on the resistance Re which is made up of three components: (I) a gravitational resistance component, (II) ice-breaking capability expressed as a function of ship's breadth, ice thickness and ice strength, and (III) a small velocity component. Of these, the gravitational resistance component is the most important. The paper reviews theoretical work and model tests for calculating the resistance of icebreakers and explains how the failure to take account of a horizontal "earth pressure" due to the presence of ice floes has led to erroneous results. An improved model testing technique making use of a polystyrene "sand" (grain size 1 mm) is outlined and some results of resistance tests with a vertical plate are discussed.

• Corporate Authors:

  Schroedter (C) and Company

  Stubbenhuk 10
  Hamburg 11,   Germany 
• Authors:
  • Wieghardt, K
• Publication Date: 1976-11

Language

• German

Media Info

• Features: References;
• Pagination: 4 p.
• Serial:
  • Schiffstechnik
  • Volume: 23
  • Publisher: Schroedter (C) and Company

Subject/Index Terms

• TRT Terms: Fluid resistance; Hulls; Ice floes; Icebreakers; Icebreaking; Resistance (Mechanics); Resistance tests
• Uncontrolled Terms: Hull resistance
• Old TRIS Terms: Model testing
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00153105
• Record Type: Publication
• Source Agency: British Ship Research Association
• Files: TRIS
• Created Date: May 11 1977 12:00AM